Search for CP violation in the phase space of D0→π+π−π+π− decays
A search for time-integrated CP violation in the Cabibbo-suppressed decay D0→π+π−π+π− is performed using an unbinned, model-independent technique known as the energy test. This is the first application of the energy test in four-body decays. The search is performed for P-even CP asymmetries and, for...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
4 April 2017
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| In: |
Physics letters
Year: 2017, Jahrgang: 769, Pages: 345-356 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2017.03.062 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1016/j.physletb.2017.03.062 Verlag, kostenfrei, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269317302538 |
| Verfasserangaben: | LHCb collaboration |
MARC
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| 245 | 1 | 0 | |a Search for CP violation in the phase space of D0→π+π−π+π− decays |c LHCb collaboration |
| 246 | 3 | 3 | |a Search for CP violation in the phase space of D 0 → pi + pi − pi + pi − decays |
| 264 | 1 | |c 4 April 2017 | |
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| 500 | |a Im Titel sind "0", "+" und "-" hochgestellt | ||
| 500 | |a Im Titel wird "pi" als griechischer Buchstabe dargestellt | ||
| 500 | |a LHCb collaboration: R. Aaij, P. d'Argent, S. Bachmann, S. Braun, A. Comerma-Montells, M. De Cian, S. Esen, D. Gerick, E. Gersabeck, X. Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, P. Krokovny, B. Leverington, J. Marks, D.S. Mitzel, S. Neubert, M. Neuner, T. Nikodem, A. Piucci, M. Schilller, M. Stahl, S. Stemmle, J. van Tilburg, U. Uwer, R. Waldi, A. Zhelezov [und weitere] | ||
| 500 | |a Gesehen am 31.08.2018 | ||
| 520 | |a A search for time-integrated CP violation in the Cabibbo-suppressed decay D0→π+π−π+π− is performed using an unbinned, model-independent technique known as the energy test. This is the first application of the energy test in four-body decays. The search is performed for P-even CP asymmetries and, for the first time, is extended to probe the P-odd case. Using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb detector at centre-of-mass energies of s=7 TeV and 8 TeV, the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (4.6±0.5)% in the P-even case, and marginally consistent with a p-value of (0.6±0.2)% in the P-odd case, corresponding to a significance for CP non-conservation of 2.7 standard deviations. | ||
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